In many cross-cultural meetings it is often assumed that standard Australian English will be the language that most people will be most comfortable using. However, this is often not the case because many Aboriginal people, especially in remote areas, customarily speak their own dialect of English, which differs significantly from standard English.
They may also speak several other traditional Aboriginal languages. In such circumstances it is perilous to assume you will be able to reach a shared understanding or agreement without the use of an interpreter or appropriate resources.
Interpreters are usually best sourced from within the community that you wish to visit.